Lamp



FIG. 1 is a perspective view of a lamp embodying the design of the present invention.

FIG. 2 is a front side elevational view of the lamp illustrated in FIG. 1, with the right side elevational view, left side elevational view and back side elevational view being identical thereto.

FIG. 3 is a top view of the lamp of FIG. 1; and,

FIG. 4 is a bottom view of the lamp of FIG. 1.

The lamp shade and pull cord shown in broken lines do not form part of the claimed design. 

The ornamental design for a lamp, substantially as shown and described. 